If I had to choose between the two, I would go with one or the other for different reasons. Gintani uses some nice parts and I believe they are made here in the US. AA has their systems imported but they do have more experience in the BMW market.

Quote:

Originally Posted by MrHarris

Performance Gintani hands down. It's also cheaper than AA.

This is the kind of thing that cracks me up about these forums. You havent tested either side by side so how can you come up with these type of comments. IMHO, the forums need to stop this BS where one person says something and then it becomes a "fact". Can you analyze both and tell us all why one is better than the other as far as performance goes?

If I had to choose between the two, I would go with one or the other for different reasons. Gintani uses some nice parts and I believe they are made here in the US. AA has their systems imported but they do have more experience in the BMW market.

This is the kind of thing that cracks me up about these forums. You havent tested either side by side so how can you come up with these type of comments. IMHO, the forums need to stop this BS where one person says something and then it becomes a "fact". Can you analyze both and tell us all why one is better than the other as far as performance goes?

I'm wondering if the difference is realted to AA using 3 inch piping . Just a thought.

There are different things that you can do to change how your powerband is going to be. If you make a muffler a certain way, youll have to make the piping a certain way (how you want the powerband). So, if you go with large 3" piping, you are already going to lose a lot of exhaust velocity. You need to make the muffler work for that size piping. I would say 90% of the exhaust brands out there dont know how to design "working" exhaust systems. Its all hype and branding really.

Gintani will make more power, but at the cost of more sound (some people like this).

AA has the NCC chambers which I'm sure isn't the best for flow while Gintani uses a straight-through design.

I'm sorry if my comment 'cracks' you up but to me as far as power goes between Gintani vs. AA for their muffler it's easy to say Gintani wins. I don't appreciate people mocking me, especially you Eloy I'm very surprised. This isn't a RPi vs. Gintani thread, maybe you forgot?

Also, I got info from powertrip who has had experience with both who clearly said the AA lost serious low end torque, I later confirmed with Alex and them at Gintani who also couldn't believe the low end power loss so it's not like I'm making this stuff out of thin air.